>>599744They do have a different head size but at least 50% of the brass made for and sold as 6.5x55 Swede is made on the .308 boltface. I've measured plenty of ammo which is definitely .308w size, including Federal, Winchester and Remington. So it might become an issue if you want to change cartridge with the rifle but a small ring Mauser would never be the rifle of choice for that when large rings are no more expensive.
Also why would you use a Mauser action to make a Creedmoor? the whole point of the .260 and Creedmoor is to take advantage of short actions, you could make a 6.5-06 and it would cost you less to feed in brass and deliver better performance, just to be clear, nothing against 6.5 Creedmoor, just didn't think it was ideal for a Mauser.
>My main carry for a long time 